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China HZG Series Direct Heating Rotary Drum Dryer for Hard Ferrite Powder - Leading Suppliers & Factory
Principle
Waste heat air or heat exchange air enters the rotary dryer and directly exchanges heat and mass with wet sludge in the channel. It is equipped with a special crushing device (specially designed structure) to quickly evaporate the water in the sludge. The smaller sludge particles are discharged from the dryer and collected together with the gas through the outer channel, while the larger sludge particles stay in the dryer for a longer time until drying is completed. Partial exhaust gas is extracted and treated by a deodorizer to meet atmospheric emission standards (or cooled by water foam dust removal) before being discharged into the atmosphere.
Characteristic
- To prevent material blockage, a scraper is welded to the drum to form a moving blade, and most of the material is forcibly stirred and sent away by a spiral guide plate, ensuring a smooth feeding process;
- The drum is designed with different inclinations based on the material's condition to ensure smoother discharge;
- The machine has a simple structure, reliable operation, easy maintenance, and can achieve continuous large-scale production. It can also comprehensively utilize waste gas operations;
- Install exhaust gas collection and treatment devices according to different requirements.
Applications
- According to the characteristics and status of the sludge drying process, different dispersion and crushing devices are used in sections to greatly improve the drying efficiency.
- Using special sealing materials to ensure sealing effect and greatly improve service life.
- The bearing adopts a cooling device to reduce the operating temperature of the bearing and extend its service life.
- Indirect heating can be used to reduce exhaust air volume and improve heat utilization efficiency.
- Adopt different sheet cutting forms according to different states of materials to reduce the degree of bonding.
- Adopt different feeding methods based on material characteristics to prevent blockage of the feed.
Technical Parameters
| HZG SERIES DIRECT HEATING ROTARY DRUM DRYER | ||||
| Drying Condition | Primary moisture content ％ | 80 | ||
| Final moisture content ％ | 40 | |||
| Product temperature ℃ | 90 | |||
| Inlet air temperature (equipped with furnace) ℃ | 500 | |||
| Outlet air temperature ℃ | 100~130 | |||
| Parameters | Feeding capacity t／d | 50 | 100 | 200 |
| Evaporation amount t／d | ~33 | ~66 | ~132 | |
| Output capacity t／d | ~17 | ~34 | ~68 | |
| Model | ø1500x12000 | ø2000x16000 | ø2800x20000 | |
| Installation power kw／h | ~70 | ~110 | ~200 | |
| Over all size (for reference) mm | 24000x3500x5500 | 34000x4000x6500 | 44000x5000x8500 | |
Product Display
Frequently Asked Questions (FAQ)
Q:How does the HZG series rotary drum dryer process wet sludge?
Waste heat air or heat exchange air directly contacts the wet sludge inside the channel. A specialized internal crushing device quickly evaporates the moisture, allowing smaller dried particles to discharge while larger particles remain inside until fully dried.
Q:What mechanisms prevent material blockage during operation?
The dryer is designed with a welded scraper on the drum to act as a moving blade, combined with a spiral guide plate that forcibly stirs and forwards the material. The drum inclination is also adjusted according to the material's specific condition.
Q:How is the exhaust gas managed to meet environmental standards?
Partial exhaust gas is extracted and routed through a deodorizer system or treated via water foam dust removal cooling before being safely discharged into the atmosphere.
Q:What moisture levels can the HZG dryer achieve?
Under standard operating conditions, the system is capable of reducing the primary moisture content of sludge from an initial 80% down to a final moisture content of 40%.
Q:What features contribute to the long service life of the machine?
The machine utilizes special high-durability sealing materials to prevent leaks and incorporates a bearing cooling system that lowers operational temperatures, significantly extending bearing and component life.
Q:What are the capacity options available for this rotary dryer series?
The series offers three main configurations based on feeding capacity: 50 t/d (Model ø1500x12000), 100 t/d (Model ø2000x16000), and 200 t/d (Model ø2800x20000).